EP2650580B1 - Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren - Google Patents

Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren Download PDF

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Publication number
EP2650580B1
EP2650580B1 EP20120163911 EP12163911A EP2650580B1 EP 2650580 B1 EP2650580 B1 EP 2650580B1 EP 20120163911 EP20120163911 EP 20120163911 EP 12163911 A EP12163911 A EP 12163911A EP 2650580 B1 EP2650580 B1 EP 2650580B1
Authority
EP
European Patent Office
Prior art keywords
tube
tube holder
corrugated
fish bone
fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20120163911
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English (en)
French (fr)
Other versions
EP2650580A1 (de
Inventor
Angelo Pressi
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HYDROGOMMA SpA
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HYDROGOMMA SpA
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Filing date
Publication date
Application filed by HYDROGOMMA SpA filed Critical HYDROGOMMA SpA
Priority to EP20120163911 priority Critical patent/EP2650580B1/de
Publication of EP2650580A1 publication Critical patent/EP2650580A1/de
Application granted granted Critical
Publication of EP2650580B1 publication Critical patent/EP2650580B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F16L19/0286—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and being formed as a flange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0036—Joints for corrugated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/025—Water supply lines as such, e.g. shower hoses

Definitions

  • the present invention relates to an improved tube holder fitting including a fish bone end piece adapted to provide a stable coupling of the tube holder fitting to a corrugated tube.
  • the most diffused flexible hoses are the so-called braided tubes, including reinforcement braids made of a stainless steel, galvanized steel, nylon or cotton material and an inliner or inner tube made of a different material depending on the use these sleeve arrangements are applied to.
  • a typical braided tube for drinking water which is at present used comprises an outer braid or sleeve made of a stainless steel or nylon 6.6 material and an elastomeric tube (such as made of EPDM, or silicone or other thermoplastic materials).
  • This tube is used in faucets, boilers, heating and conditioning systems in general, and for beverage dispensers and so on.
  • the end portions of the flexible sleeves comprise suitable threaded end pieces for coupling to the apparatus.
  • the fitting end piece is connected to the flexible hose end portions through a connecting bush which is crimped on the tube holder fitting end piece, while crushing or pressing the tube end portion between the outer surface of the end piece and braid.
  • the resilient and deforming characteristics of the rubber, silicone, pex or other thermoplastic material tube allow the latter to properly adhere to the end piece, thereby providing the required hydraulic tightness.
  • Such a fitting end piece clamping may be easily and inexpensively made and is reliable from the functional standpoint.
  • Document GB 2088001 discloses a convoluted hose fitting with a nipple with a helical projection on its hose receiving outer surface, wherein a helical projection is defined on said helical surface and wherein the hose has a convoluted inner tube of a synthetic plastics material.
  • the aim of the present invention is to provide a tube holder fitting assembly comprising a flexible corrugated tube not including elastic components.
  • the above elastic component free tubes do not allow to stably clamp or connect said tubes to conventional metal fittings, since said tubes, which are not elastic or resilient, may disengage from the fittings therefor under the operating pressure and thermal cycles, thereby causing breakages.
  • a main object of the present invention is to provide a required coupling stability and prevent the rigid/flexible tubes from disengaging from terminal fitting metal end pieces, by using an improved tube holder fitting which, owing to its specifically designed constructional features, is adapted to be firmly clamped not only to elastomeric material tubes, but also to any desired types of tubes having either a linear or a corrugated profile, and made of plastics.
  • Yet another object of the present invention is to provide such a tube holder fitting which may be applied to polyolefinic plastics material tubes having either a linear or a corrugated surface, and having elastic properties substantially less than those of elastomeric material tubes and which, in order to increase their flexible features, must be corrugated.
  • the present invention will provide an improved tube holder fitting, including a fish bone end piece, having improved strength and pressure characteristics.
  • the tube holder fitting is so designed as to be firmly coupled or clamped not only to elastomeric tubes but also to any desired types of plastics material linear or corrugated tube arrangement.
  • the tube holder fitting according to the present invention comprises a fish bone profile facilitating the threading or insertion of the fitting end piece into the corrugated tube.
  • Said first fish bone portion having the mentioned characteristics, prevents the fitting from being accidentally displaced or disengaged during the clamping operation thereon.
  • the fish bone profile or contour of the fitting has the same pitch as the corrugated tube corrugations, the latter will be housed in the tapering portion, thereby being locked at the bottom of each fish bone portion, to provide the desired mechanical tightness.
  • the tube holder Owing to the size difference between the first fitting fish bone portion, having a diameter larger than those of the following fish bone portions, upon having performed the crimping operation, the tube holder is so deformed that, at the smaller portion thereof, a greater resistance against a disengaging or unthreading of the fitting will be obtained, since the small diameter difference will be compensated for or offset by the material hardness/stiffness.
  • tubes made of materials free of any compression set (a resilient or elastic response to an applied constant deformation) or having an elasticity substantially less than that of elastomeric material must be pressure crimped, it is necessary to prevent the fitting end piece from turning within the tube, thereby preventing water micro-leakages from occurring.
  • the invention provides a suitable knurled pattern 8, parallel to the tube holder axis, said knurled pattern having, for functionality reasons, a 1 mm pitch.
  • an improved tube holder fitting including a fish bone end piece, for coupling to corrugated tubes according to claim 1.
  • the subject matter of the present invention comprises a flexible tube or hose for hydrothermosanitary applications and generally indicated by the reference number 12 and including, at at least one of its two end portions, a tube 11 made of a polyolefinic plastics material and having corrugated or waved surfaces.
  • polyolefinic tubes have a flexibility which is substantially less than that of elastomeric material tubes and, to enhance their flexibility, are corrugated by any conventional corrugation method, and adapted to modify the tube profile from a linear to a corrugated one.
  • the present invention provides an improved tube holder fitting 1 which may be firmly clamped or coupled not only to elastomeric material tubes 11 but also to any desired type of tubes, either linear and/or corrugated, and either made of a plastic or a metal material.
  • the tube holder fitting 1 comprises a fish bone contoured end piece, facilitating the threading of the fitting 1 into the corrugated tube 11.
  • the inventive fitting 1 comprises a first fish bone portion 4 having a diameter larger than that of the other fish bone portions thereby providing a hooking effect.
  • said first fish bone portion 4 engages with and locks to a corrugation of the corrugated tube 11, it prevents the tube holder fitting 1 from being accidentally displaced in assembling it to the corrugated tube 11.
  • the drawings further show a flexible sleeve element 12 having, at the end portions thereof, a tube holder fitting 1 including a plurality of fish bone tooth elements 3, which are spaced from one another with a distance equivalent to that between the corrugations of the corrugated tube 11.
  • One of the above tooth elements arranged at the end portion of the end piece 2, and indicated by the reference number 4, has a diameter larger than that of the other fish bone portions 3, thereby providing the above hooking and locking effect.
  • said tooth element by fixedly engaging a corrugation of the corrugated tube 11, will prevent the fitting 1 from being accidentally displaced as the flexible tube 12 is assembled.
  • a bush element is clamped or crimped to the tube holder end piece 2, the braid 10 and to the tube 11.
  • the tube holder fitting 1 further comprises, at an end portion thereof, a ring nut 7 engaging with a clamping nut 8 for in turn engaging a duct to be connected.
  • the tube holder 1 end piece 2 comprises a fish bone portion 4 having a diameter larger than those of the other fish bone portions 3.
  • the use of the inventive fitting provides the corrugated polyolefinic tube 11 with such a flexibility as to be suitable for hygienic-sanitary applications.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (7)

  1. Verbesserte Rohrhalterfittinganordnung, dadurch gekennzeichnet, dass die Rohrhalterfittinganordnung ein flexibles Wellrohr, das keine elastischen Komponenten umfasst, und ein Fischgrätprofilfitting, das mit dem Wellrohr gekoppelt ist, welches mehrere parallele Wellen aufweist, umfasst, wobei das Fitting mehrere Fischgrätrippen mit derselben Steigung wie jener der Wellen des Wellrohres umfasst, und wobei ein Fischgrät-Endabschnitt einen Durchmesser aufweist, der größer als jener der anderen Fischgrätabschnitte ist und dadurch für eine Einhakwirkung zum Einrasten mit einer Welle des Wellrohres sorgt.
  2. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass der erste Fischgrätabschnitt mit vergrößertem Durchmesser verhindert, dass das Fitting unbeabsichtigt verlagert wird, während es zum Herstellen eines flexiblen Schlauchelements geklemmt wird.
  3. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Rohrhalterfitting dazu ausgestaltet ist, flexible Schläuche herzustellen, die ein äußeres Geflecht oder eine äußere Umflechtung aus Edelstahl oder Nylon 6.6 und ein Wellrohr, das aus einem Elastomermaterial (EPDM) oder Silikon oder einem anderen Thermoplastmaterial hergestellt ist, umfassen.
  4. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Rohrhalterfitting der Rohrhalterfittinganordnung dazu ausgestaltet ist, mit Kunststoffrohren verwendet zu werden, welche entweder eine geradlinige oder eine gewellte Oberfläche aufweisen, wobei das Fischgrätprofil des Fittings, welches dieselbe Steigung wie jene der Wellen des Wellrohres aufweist, ermöglicht, die Wellen des Wellrohres in sich verjüngenden Abschnitten in Eingriff zu bringen und dadurch mit der Basis jedes Fischgrätabschnitts zu verrasten, um eine verbesserte mechanische Dichtigkeit und Fluiddichtigkeit vorzusehen, durch Zusammendrücken des Polyolefin-Wellrohres zwischen einem Buchsenelement, einem Geflecht und dem Fittingendstück.
  5. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Rohrhalterfitting (1) mittels eines Crimpbuchsenelements (9) an dem Schlauch und dem flexiblen Wellrohr angebracht ist; wobei das Buchsenelement derart mechanisch verformt wird, dass es eine stabile und feste Verbindung zwischen dem Buchsenelement, dem Rohrhalter, dem äußeren Schlauch, dem Wellrohr und dem Endstück vorsieht.
  6. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Rohrhalterfitting an einem Endabschnitt davon eine Ringmutter umfasst, die mit einer Klemmmutter (8) in Eingriff steht, welche auf eine anzukoppelnde Leitung aufzubringen ist, wobei der andere Endabschnitt (5) des Endstücks (2) des Rohrhalters (1) einen Fischgrätabschnitt (4) mit einem Durchmesser umfasst, welcher größer als die Durchmesser der anderen Fischgrätabschnitte (3) ist.
  7. Verbesserte Rohrhalterfittinganordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Rohrhalter ein Fischgrätendstück zur Verbindung mit einem Wellrohr und einem Verstärkungsgeflecht aus Edelstahl, verzinktem Stahl, Nylon oder Baumwolle und einem Inliner oder einem inneren Rohr aus einem Polyolefinmaterial oder anderen Material umfasst.
EP20120163911 2012-04-12 2012-04-12 Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren Not-in-force EP2650580B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120163911 EP2650580B1 (de) 2012-04-12 2012-04-12 Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120163911 EP2650580B1 (de) 2012-04-12 2012-04-12 Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren

Publications (2)

Publication Number Publication Date
EP2650580A1 EP2650580A1 (de) 2013-10-16
EP2650580B1 true EP2650580B1 (de) 2014-08-06

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Application Number Title Priority Date Filing Date
EP20120163911 Not-in-force EP2650580B1 (de) 2012-04-12 2012-04-12 Verbesserte Rohrhalterfassung mit einem Fischgrätenendstück zum Koppeln von Wellrohren

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2399296B1 (es) * 2013-01-22 2013-10-11 Tucai, S.A. Conjunto conector para conducciones de medios líquidos
DE102017002275A1 (de) * 2017-03-10 2018-09-13 Uniwell Rohrsysteme Gmbh & Co. Kg Druckschlauch
DE102019209670A1 (de) 2019-07-02 2021-01-07 Hansgrohe Se Mehrlumenschlauch und Anschlussnippel
DE102020108431A1 (de) * 2020-03-26 2021-09-30 Voss Automotive Gmbh Wellrohrverbindungsanordnung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369992A (en) * 1980-11-24 1983-01-25 Aeroquip Corporation Convoluted hose fitting
GB2130325A (en) * 1982-11-15 1984-05-31 Fell Stuart Australia Hose connector
DE19929010C1 (de) * 1999-06-24 2000-11-23 Kirchner Fraenk Rohr Kunststofformteil sowie Verbindungsvorrichtung mit diesem

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